Small warbler with a restricted range in the Andes of northwestern Peru and southwestern Ecuador. It is yellow with a grayish head boldly marked with dark stripes. It lacks the black crown stripe and white “headlights” of Gray-and-gold Warbler. Compared to Three-striped Warbler (little or no overlap), it is grayer on the head and neck, lacks yellow in the crown, and shows slightly paler and less extensive facial markings. Inhabits both dry and humid forest, where it actively flits around in the branches.